Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1990-05-01
1991-07-09
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 88, 521907, C08J 918
Patent
active
050306634
ABSTRACT:
Fire-retardant expandable vinyl aromatic polymer beads are prepared by an aqueous suspension method whereby a bromophenyl allyl ether fire-retardant agent and a volatile aliphatic hydrocarbon foaming agents are incorporated into particles of a thermoplastic such as polystyrene. The beads are useful in the preparation of molded foam articles having excellent resistance to flame.
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French Pat. No. 2,413,420 (Chem. Abs. 92, 7445g; full patent not available.
Hajnik Dennis M.
Sonnenberg Fred M.
ARCO Chemical Technology, Inc.
Foelak Morton
Harper Stephen D.
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